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Molecular Geometry The molecular geometry of a molecule describes the three-dimensional shape of just the atoms. This is in contrast to the electronic geometry, which describes the shape of all electron regions. In order to determine the molecular geometry of a molecule, one must first determine the electronic geometry by drawing the Lewis structure. Part A What is the molecular geometry of NH_3? Part B What is the molecular geometry of CO_2? Part C What is the molecular geometry of H_2O?
A procedure called coulogravimetric analysis combines a weight determination with a measurement of the quantity of electricity in a controlled-potential electrolysis to analyze bromide-chloride mixtures
The average molecular speed in a sample of CH4 gas is 641 m/s at 311 K. The average molecular speed in a sample of He gas is ________ m/s at the same temperature.
Draw the structures of phthalic anhydride, ethylene glycol, and glycerol. Draw the polymer that results from phthalic anhydride & ethylene glycol. Draw the polymer that results from phthalic anhydride and glycerol.
Calculate the ionic strength of a solution containing 0.010 M calcium sulfate and 0.010 M sodium chloride. Show all work.
volume of methane gas is cooled from 298 K to 149 L. If the pressure remains constant, what is the final volume?
What is the total volume of gaseous products, measured at 332°C and 732 torr, when an automobile engine burns 100. g C8H18 (a typical component of gasoline)? Answer needs to be in Liters
If the electrochemical cell is allowed to operate as a gavanic cell, which solution species will be oxidized, which solution species will reduce. write the sybolic representation for the galvanic cell.
the standard change in Gibbs free energy is ?G° = -32.8 kJ/mol. What is ?G for this reaction at 298 K when the partial pressures are P C2H6=0.100atm, P H2=0.100atm and P CH4=.750atm
125 mL of H_2O is initially at room temperature (22.0C). A chilled steel rod at 2.0C is placed in the water. If the final temperature of the system is 21.5C, what is the mass of the steel bar?
If you are given a 0.31 g piece of sodium metal to react with water, how many moles of HCl would it take to neutralize the sodium hydroxide produced
The vapor pressure of ethanol at 34.7 degrees Celsius is 100mmgh, and the heat of vaporization of ehanol is 38.6 kj/ mol. What is the vapor pressure of ethanol in mm Hg at 65.0 degree celcius
why doen't the mass number decrease? (because there is one less neutron). But the atomic number increases due. What happens to the electrons?
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